[U-Boot] [PATCH V12 2/4] usb: rockchip: add rockusb command

[Eddie Cai]

this patch add rockusb command. the usage is
rockusb <USB_controller> <devtype> <dev[:part]>
e.g. rockusb 0 mmc 0

Signed-off-by: Eddie Cai <eddie.cai.linux at gmail.com>
Reviewed-by: Simon Glass <sjg at chromium.org>
---
Changes in v12:
-rebase to the latest main line U-Boot

Changes in v11:
-fix check patch error
-add maintainer

Changes in v10:
-fix build error

Changes in v9:
-fix compile error

Changes in v8:
-none

Changes in v7:
-none

Changes in v6:
-move some data to f_rockusb structure

Changes in v5:
-fix build error when build non-rockchip board
-fix checkpatch error

Changes in v4:
-use enum instead of macro define
-move some structure define and macro to f_rockusb.h
-add some function comment as Simon required
-address other comment from Simon
-fix build error as Lukasz point out
---
 MAINTAINERS   |  1 +
 cmd/Kconfig   |  8 +++++++
 cmd/Makefile  |  1 +
 cmd/rockusb.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 84 insertions(+)
 create mode 100644 cmd/rockusb.c

diff --git a/MAINTAINERS b/MAINTAINERS
index baf2beb..b231610 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -492,6 +492,7 @@ ROCKUSB
 M:	Eddie Cai <eddie.cai.linux at gmail.com>
 S:	Maintained
 F:	drivers/usb/gadget/f_rockusb.c
+F:	cmd/rockusb.c
 
 VIDEO
 M:	Anatolij Gustschin <agust at denx.de>
diff --git a/cmd/Kconfig b/cmd/Kconfig
index c033223..83dc778 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -914,6 +914,14 @@ config CMD_USB_SDP
 	help
 	  Enables the command "sdp" which is used to have U-Boot emulating the
 	  Serial Download Protocol (SDP) via USB.
+config CMD_ROCKUSB
+	bool "rockusb"
+	depends on USB_FUNCTION_ROCKUSB
+	help
+          Rockusb protocol is widely used by Rockchip SoC based devices. It can
+	  read/write info, image to/from devices. This enable rockusb command
+	  support to communication with rockusb device. for more detail about
+	  this command, please read doc/README.rockusb.
 
 config CMD_USB_MASS_STORAGE
 	bool "UMS usb mass storage"
diff --git a/cmd/Makefile b/cmd/Makefile
index 00e3869..0fd2849 100644
--- a/cmd/Makefile
+++ b/cmd/Makefile
@@ -105,6 +105,7 @@ obj-$(CONFIG_CMD_READ) += read.o
 obj-$(CONFIG_CMD_REGINFO) += reginfo.o
 obj-$(CONFIG_CMD_REISER) += reiser.o
 obj-$(CONFIG_CMD_REMOTEPROC) += remoteproc.o
+obj-$(CONFIG_CMD_ROCKUSB) += rockusb.o
 obj-$(CONFIG_SANDBOX) += host.o
 obj-$(CONFIG_CMD_SATA) += sata.o
 obj-$(CONFIG_CMD_NVME) += nvme.o
diff --git a/cmd/rockusb.c b/cmd/rockusb.c
new file mode 100644
index 0000000..af81cdc
--- /dev/null
+++ b/cmd/rockusb.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2017 Eddie Cai <eddie.cai.linux at gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <console.h>
+#include <g_dnl.h>
+#include <usb.h>
+#include <asm/arch/f_rockusb.h>
+
+static int do_rockusb(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
+{
+	int controller_index, dev_index;
+	char *usb_controller;
+	char *devtype;
+	char *devnum;
+	int ret;
+
+	if (argc < 2)
+		return CMD_RET_USAGE;
+
+	usb_controller = argv[1];
+	controller_index = simple_strtoul(usb_controller, NULL, 0);
+
+	if (argc >= 4) {
+		devtype = argv[2];
+		devnum  = argv[3];
+	} else {
+		return CMD_RET_USAGE;
+	}
+	dev_index = simple_strtoul(devnum, NULL, 0);
+	rockusb_dev_init(devtype, dev_index);
+
+	ret = board_usb_init(controller_index, USB_INIT_DEVICE);
+	if (ret) {
+		printf("USB init failed: %d\n", ret);
+		return CMD_RET_FAILURE;
+	}
+
+	g_dnl_clear_detach();
+	ret = g_dnl_register("usb_dnl_rockusb");
+	if (ret)
+		return CMD_RET_FAILURE;
+
+	if (!g_dnl_board_usb_cable_connected()) {
+		puts("\rUSB cable not detected, Command exit.\n");
+		ret = CMD_RET_FAILURE;
+		goto exit;
+	}
+
+	while (1) {
+		if (g_dnl_detach())
+			break;
+		if (ctrlc())
+			break;
+		usb_gadget_handle_interrupts(controller_index);
+	}
+	ret = CMD_RET_SUCCESS;
+
+exit:
+	g_dnl_unregister();
+	g_dnl_clear_detach();
+	board_usb_cleanup(controller_index, USB_INIT_DEVICE);
+
+	return ret;
+}
+
+U_BOOT_CMD(rockusb, 4, 1, do_rockusb,
+	   "use the rockusb protocol",
+	   "<USB_controller> <devtype> <dev[:part]>  e.g. rockusb 0 mmc 0\n"
+);
-- 
1.9.1